document.write( "Question 272064: Please solve this using the substitution method. \r
\n" ); document.write( "\n" ); document.write( "x = 3y - 5
\n" ); document.write( "6x - 18y = -30
\n" ); document.write( "

Algebra.Com's Answer #199069 by checkley77(12844)\"\" \"About 
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x = 3y - 5
\n" ); document.write( "6x - 18y = -30
\n" ); document.write( "6(3y-5)-18y=-30
\n" ); document.write( "18y-30-18y=-30
\n" ); document.write( "0y=-30+30
\n" ); document.write( "0y=0
\n" ); document.write( "There is no unique solution to these 2 equations for the x & y terms.
\n" ); document.write( "The 2 equations are identical.
\n" ); document.write( "Should you plot these 2 equations, you'd find that they form a single line which has an infinite number of solutions for x & y.
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